CN213379152U

CN213379152U - Sand core for casting is assembled to accurate pump body complicacy of car

Info

Publication number: CN213379152U
Application number: CN202022371352.1U
Authority: CN
Inventors: 金辰
Original assignee: Suzhou Shenchuan Molding Materials Co ltd
Current assignee: Suzhou Shenchuan Molding Materials Co ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-06-08
Anticipated expiration: 2030-10-22

Abstract

The utility model discloses a foundry sand core is assembled to accurate pump body complicacy of car, including first psammitolite, second psammitolite, third psammitolite, fourth psammitolite and fifth psammitolite, first psammitolite includes liquid outlet hole shaping portion, working chamber shaping portion, main leather collar standing groove shaping portion, vice leather collar standing groove shaping portion and liquid storage cavity shaping portion, the second psammitolite includes liquid inlet hole shaping portion, transfer line shaping portion and steel ball standing groove shaping portion, third psammitolite and fourth psammitolite pour with outside die cavity combination and form the plunger. The utility model discloses a casting is assembled to accurate pump body complicacy of car is with sand core, and the cast plunger type clutch master cylinder of this casting mode is compared with the clutch master cylinder of ordinary structure, and under the condition that satisfies same discharge capacity and stroke, axial length will be short, and the installation space requirement is littleer, part structure is simpler, compact, comprehensive properties is higher, and then has improved the working property and the life of product.

Description

Sand core for casting is assembled to accurate pump body complicacy of car

Technical Field

The utility model relates to a car parts foundry sand core technical field especially relates to a foundry sand core is assembled to accurate pump body complicacy of car.

Background

The clutch master cylinder is a component in a hydraulic operating mechanism of a friction type clutch of an automobile, and is connected with a clutch pedal in a cab, when a driver steps on the clutch pedal, a master cylinder piston moves axially, the volume of a working chamber in the pump is reduced to increase hydraulic pressure, the hydraulic pressure is transmitted to a slave cylinder through a brake oil pipe connected with the pump, the hydraulic pressure pushes the piston to move axially in a working chamber of the slave cylinder to enable a release fork to act, a release bearing pushes an inner ring of a diaphragm spring to move forwards, the outer end of the diaphragm spring pulls a pressure plate to move backwards to relieve the pressure of a driven plate, a driving part and a driven part of the clutch are in a release state to interrupt the transmission of the power, when the clutch pedal is in a free state, the diaphragm spring of the clutch presses the pressure plate, the driven plate and a flywheel against each other, the clutch is in a joint state, and the clutch master cylinder converts the pushing force applied by the driver, the clutch slave cylinder converts hydraulic pressure into thrust, and the two elements and an oil pipe connected between the two elements are added with brake fluid to realize force transmission.

When casting the clutch master cylinder, because the structure of clutch master cylinder is more complicated, adopt different structure equipment to form complete structure, and connect between each structure more closely, inside composite member is also more, so can't realize one shot forming casting, need adopt split type cast mode to go on, even separately cast each part with different casting psammitolite, the part of casting completion is assembled again and is formed complete clutch master cylinder structure, thereby realize the function of clutch master cylinder, put into use again, so need provide the complicated sand core for the casting of assembling of a clutch master cylinder for car, in order to accomplish the casting of clutch master cylinder for car.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a sand core for casting which is assembled complicatedly by an automobile precision pump body.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a foundry sand core is assembled to accurate pump body complicacy of car, includes first psammitolite, second psammitolite, third psammitolite, fourth psammitolite and fifth psammitolite, first psammitolite includes liquid hole shaping portion, working chamber shaping portion, main leather collar standing groove shaping portion, vice leather collar standing groove shaping portion and stock solution chamber shaping portion, the second psammitolite includes feed liquor hole shaping portion, transfer line shaping portion and steel ball standing groove shaping portion, third psammitolite and fourth psammitolite pour with outside die cavity combination and form the plunger, the plunger includes spring spacing groove and plunger hole, the one end lateral wall that the plunger is close to the spring spacing groove is fixed has seted up a plurality of pressure relief holes, the spring holder is pour with outside die cavity combination and forms the spring holder, the pull rod through-hole has been seted up to the spring holder end fixing.

As a further description of the above technical solution:

the first sand core, the second sand core and an external cavity are combined and poured to form a main pump body, and the main pump body comprises a liquid outlet hole, a working cavity, a main leather collar placing groove, an auxiliary leather collar placing groove, a liquid storage cavity, a liquid inlet hole, a liquid conveying pipe and a steel ball placing groove.

As a further description of the above technical solution:

and a steel ball is fixedly arranged in the steel ball placing groove.

As a further description of the above technical solution:

and a pull rod is fixedly arranged in the pull rod through hole.

As a further description of the above technical solution:

and a limiting plate is fixedly arranged at the end part of one end of the pull rod, which extends out of the spring seat.

As a further description of the above technical solution:

the spring seat outside is fixed and is provided with the spring, the spring is kept away from spring seat first end and limiting plate fixed connection, the limiting plate slides and sets up at spring spacing inslot portion.

As a further description of the above technical solution:

the inside fixed main leather collar that is provided with of main leather collar standing groove, the inside fixed vice leather collar that is provided with of vice leather collar standing groove.

As a further description of the above technical solution:

the first sand core, the second sand core, the third sand core, the fourth sand core and the fifth sand core all use steel shots as filling sand and are manufactured by recycled recovered sand, and a proper amount of benzenesulfonic acid is added into the first sand core, the second sand core, the third sand core, the fourth sand core and the fifth sand core.

The utility model discloses following beneficial effect has:

the utility model provides a pair of casting sand core is assembled to car precision pump body complicacy carries out the part casting of each part through setting up different psammitolite, assembles each part of casting again and forms complete structure to realize the complete function of clutch master cylinder, adopt split type casting mode, the casting that can make each part becomes simple, the split type casting psammitolite structure of design is fairly simple, operation during casting is more convenient, labour saving and time saving uses manpower sparingly and material, further save the casting expense.

The utility model provides a pair of casting is assembled to accurate pump body complicacy of car is with sand core, psammitolite model weight is little, uses the raw materials less, practices thrift the cost, the transport of being convenient for, and the psammitolite precision is high, and the core assembly clearance is little to use the shot as filling and covering the sand, strengthened cooling performance, the recycling sand is recycled in the raw materials use, practices thrift the cost and ensured psammitolite intensity, and add the performance that proper amount benzenesulfonic acid ensured the recycling sand, it is very convenient to use.

The utility model provides a pair of casting is assembled to accurate pump body complicacy of car is with sand core, the cast plunger type clutch master cylinder of this casting mode is compared with the clutch master cylinder of ordinary structure, under the condition that satisfies same discharge capacity and stroke, axial length will be short, the installation space requirement is littleer, part structure is simpler, compact, the comprehensive properties is higher, and during operation reciprocating motion's sealed face is pump body plunger excircle, the processing geometric accuracy of plunger excircle, key parameter such as roughness changes in the assurance, thereby the working property and the life of product have been improved.

Drawings

Fig. 1 is a schematic view of a main pump body of a complex-assembly casting sand core of an automobile precision pump body and a casting sand core thereof, which are provided by the utility model;

fig. 2 is a schematic diagram of a plunger and a casting sand core of a complex assembling casting sand core of an automobile precision pump body provided by the utility model;

FIG. 3 is a schematic diagram of a spring seat of a sand core for casting and a casting sand core for complex assembly of an automobile precision pump body, which are provided by the utility model;

fig. 4 is the utility model provides a casting finished product installation sketch map of casting with sand core is assembled to accurate pump body complicacy of car.

Illustration of the drawings:

1. a first sand core; 2. a liquid outlet hole forming part; 3. a working cavity forming part; 4. a main leather ring placing groove forming part; 5. a secondary leather collar placing groove forming part; 6. a liquid storage cavity forming part; 7. a second sand core; 8. a liquid inlet hole forming part; 9. a transfusion tube molding part; 10. a steel ball placing groove forming part; 11. a liquid outlet hole; 12. a working chamber; 13. a main leather ring placing groove; 14. a secondary leather collar placing groove; 15. a liquid storage cavity; 16. a liquid inlet hole; 17. a transfusion tube; 18. a steel ball placing groove; 19. a steel ball; 20. a third sand core; 21. a fourth sand core; 22. a plunger; 23. a spring limiting groove; 24. a plunger hole; 25. a pressure relief hole; 26. a fifth sand core; 27. a spring seat; 28. a pull rod through hole; 29. a main pump body; 30. a main leather collar; 31. a secondary leather collar; 32. a pull rod; 33. a limiting plate; 34. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: the utility model provides a sand core for casting is assembled to accurate pump body complicacy of car, including first psammitolite 1, second psammitolite 7, third psammitolite 20, fourth psammitolite 21 and fifth psammitolite 26, first psammitolite 1 includes liquid outlet hole shaping portion 2, working chamber shaping portion 3, main leather collar standing groove shaping portion 4, vice leather collar standing groove shaping portion 5 and liquid storage chamber shaping portion 6, second psammitolite 7 includes liquid inlet hole shaping portion 8, transfer line shaping portion 9 and steel ball standing groove shaping portion 10, third psammitolite 20 and fourth psammitolite 21 pour with the outside die cavity combination and form plunger 22, plunger 22 includes spring spacing groove 23 and plunger hole 24, plunger 22 is close to the fixed a plurality of relief pressure orifices 25 of having seted up of one end lateral wall of spring spacing groove 23, fifth psammitolite 26 pours with the outside die cavity combination and forms spring holder 27, spring holder 27 end fixing has seted up pull.

The first sand core 1, the second sand core 7 and an external cavity are combined and poured to form a main pump body 29, the main pump body 29 comprises a liquid outlet hole 11, a working cavity 12, a main leather ring placing groove 13, an auxiliary leather ring placing groove 14, a liquid storage cavity 15, a liquid inlet hole 16, a liquid conveying pipe 17 and a steel ball placing groove 18, a steel ball 19 is fixedly arranged inside the steel ball placing groove 18, a pull rod 32 is fixedly arranged inside a pull rod through hole 28, a limiting plate 33 is fixedly arranged at one end part of the pull rod 32 extending out of a spring seat 27, a spring 34 is fixedly arranged outside the spring seat 27, the first end, far away from the spring seat 27, of the spring 34 is fixedly connected with the limiting plate 33, the limiting plate 33 is slidably arranged inside a spring limiting groove 23, a main leather ring 30 is fixedly arranged inside the main leather ring placing groove 13, an auxiliary leather ring 31 is fixedly arranged inside the auxiliary leather ring placing groove 14, and steel shots are used for sand filling for the first sand core 1, the second, and the recycled sand is used for manufacturing, and a proper amount of benzenesulfonic acid is added into the first sand core 1, the second sand core 7, the third sand core 20, the fourth sand core 21 and the fifth sand core 26.

The working principle is as follows: when the sand core for the complex assembly casting of the automobile precision pump body is used, a first sand core 1 and a second sand core 7 are combined with an external cavity, then a main pump body 29 is formed by pouring, a liquid outlet hole forming part 2 forms a liquid outlet hole 11, a working cavity forming part 3 forms a working cavity 12, a main leather ring placing groove forming part 4 forms a main leather ring placing groove 13, an auxiliary leather ring placing groove forming part 5 forms an auxiliary leather ring placing groove 14, a liquid storage cavity forming part 6 forms a liquid storage cavity 15, a liquid inlet hole forming part 8 forms a liquid inlet hole 16, a liquid conveying pipe forming part 9 forms a liquid conveying pipe 17, a steel ball placing groove forming part 10 forms a steel ball placing groove 18, a third sand core 20 and a fourth sand core 21 are combined with the external cavity, then a plunger 22 is formed by pouring, a spring limiting groove 23 is formed by the third sand core 20, a plunger hole 24 is formed by the fourth sand core 21, and finally a fifth sand core 26 is combined with the external cavity, then, a spring seat 27 is formed by pouring, the main pump body 29, the plunger 22 and the spring seat 27 which are formed by pouring are assembled to form a complete clutch master cylinder structure, a pull rod 32 is arranged in the spring seat 27, a limit plate 33 is arranged at one end part of the pull rod 32 extending out of the spring seat 27, finally, a spring 34 is arranged outside the spring seat 27, the end part of the spring 34 props against the limit plate 33, the limit plate 33 is arranged in a spring limit groove 23, a main leather collar 30 is arranged in a main leather collar placing groove 13, an auxiliary leather collar 31 is arranged in an auxiliary leather collar placing groove 14, a steel ball 19 is arranged in a steel ball placing groove 18, and therefore the working capacity of the clutch master cylinder is achieved The part structure is simpler and more compact, comprehensive properties are higher, and the sealed face of reciprocating motion is the pump body plunger excircle during operation, and key parameters such as processing geometric accuracy, roughness of plunger excircle are changeed in guaranteeing to the working property and the life of product have been improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a foundry sand core is assembled to accurate pump body of car complicacy, includes first psammitolite (1), second psammitolite (7), third psammitolite (20), fourth psammitolite (21) and fifth psammitolite (26), its characterized in that: the first sand core (1) comprises a liquid outlet hole forming part (2), a working cavity forming part (3), a main leather ring placing groove forming part (4), an auxiliary leather ring placing groove forming part (5) and a liquid storage cavity forming part (6), the second sand core (7) comprises a liquid inlet hole forming part (8), a transfusion pipe forming part (9) and a steel ball placing groove forming part (10), the third sand core (20) and the fourth sand core (21) are combined with an external cavity for pouring to form a plunger (22), the plunger (22) comprises a spring limiting groove (23) and a plunger hole (24), a plurality of pressure relief holes (25) are fixedly arranged on the side wall of one end of the plunger (22) close to the spring limiting groove (23), the fifth sand core (26) and an external cavity are combined and poured to form a spring seat (27), and a pull rod through hole (28) is fixedly formed in the end portion of the spring seat (27).

2. The sand core for the complex assembly casting of the precise pump body of the automobile according to claim 1, which is characterized in that: the first sand core (1) and the second sand core (7) are combined with an external cavity to form a main pump body (29), and the main pump body (29) comprises a liquid outlet hole (11), a working cavity (12), a main leather ring placing groove (13), an auxiliary leather ring placing groove (14), a liquid storage cavity (15), a liquid inlet hole (16), a liquid conveying pipe (17) and a steel ball placing groove (18).

3. The sand core for the complex assembly casting of the precise pump body of the automobile according to claim 2, is characterized in that: and a steel ball (19) is fixedly arranged in the steel ball placing groove (18).

4. The sand core for the complex assembly casting of the precise pump body of the automobile according to claim 1, which is characterized in that: and a pull rod (32) is fixedly arranged in the pull rod through hole (28).

5. The sand core for the complex assembly casting of the precise pump body of the automobile according to claim 4, wherein: and a limiting plate (33) is fixedly arranged at the end part of one end of the pull rod (32) extending out of the spring seat (27).

6. The sand core for the complex assembly casting of the precise pump body of the automobile according to claim 1 or 5, which is characterized in that: spring (34) are fixedly arranged on the outer side of the spring seat (27), the first end of the spring seat (27) is far away from the spring (34) and is fixedly connected with the limiting plate (33), and the limiting plate (33) is arranged inside the spring limiting groove (23) in a sliding mode.

7. The sand core for the complex assembly casting of the precise pump body of the automobile according to claim 2, is characterized in that: the main leather ring placing groove (13) is internally and fixedly provided with a main leather ring (30), and the auxiliary leather ring placing groove (14) is internally and fixedly provided with an auxiliary leather ring (31).

8. The sand core for the complex assembly casting of the precise pump body of the automobile according to claim 1, which is characterized in that: the first sand core (1), the second sand core (7), the third sand core (20), the fourth sand core (21) and the fifth sand core (26) are all made of steel shots as filling and covering sand and recycled recovered sand, and a proper amount of benzenesulfonic acid is added into the first sand core (1), the second sand core (7), the third sand core (20), the fourth sand core (21) and the fifth sand core (26).